I don't know if this is related but I tried that app to disable services and disabled all the services in google play services.
Gmail and others didn't work, so I enabled them again just like it was before, but now I'm getting a "can't sync contacts" problem in the google account sync panel in preferences...
Seems only contacts is having problems when syncing. Everything else syncs perfectly.
What should I do?
I tried deleting my google account and then adding it again, but no luck.